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libfbui/MPEG/getvlc.h
1 /* getvlc.h, variable length code tables */
2
3 /* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
4
5 /*
6 * Disclaimer of Warranty
7 *
8 * These software programs are available to the user without any license fee or
9 * royalty on an "as is" basis. The MPEG Software Simulation Group disclaims
10 * any and all warranties, whether express, implied, or statuary, including any
11 * implied warranties or merchantability or of fitness for a particular
12 * purpose. In no event shall the copyright-holder be liable for any
13 * incidental, punitive, or consequential damages of any kind whatsoever
14 * arising from the use of these programs.
15 *
16 * This disclaimer of warranty extends to the user of these programs and user's
17 * customers, employees, agents, transferees, successors, and assigns.
18 *
19 * The MPEG Software Simulation Group does not represent or warrant that the
20 * programs furnished hereunder are free of infringement of any third-party
21 * patents.
22 *
23 * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
24 * are subject to royalty fees to patent holders. Many of these patents are
25 * general enough such that they are unavoidable regardless of implementation
26 * design.
27 *
28 */
29
30 /* NOTE: #define constants such as MACROBLOCK_QUANT are upper case
31 as per C programming convention. However, the MPEG document
32 (ISO/IEC 13818-2) lists them in all lower case (e.g. Annex B) */
33
34 /* NOTE: the VLC tables are in a flash format---a transformation
35 of the tables in Annex B to a form more convenient towards
36 parallel (more than one-bit-at-a-time) decoding */
37
38 typedef struct {
39 char val, len;
40 } VLCtab;
41
42 typedef struct {
43 char run, level, len;
44 } DCTtab;
45
46 /* Table B-3, macroblock_type in P-pictures, codes 001..1xx */
47 static VLCtab PMBtab0[8] = {
48 {ERROR,0},
49 {MACROBLOCK_MOTION_FORWARD,3},
50 {MACROBLOCK_PATTERN,2}, {MACROBLOCK_PATTERN,2},
51 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,1},
52 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,1},
53 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,1},
54 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,1}
55 };
56
57 /* Table B-3, macroblock_type in P-pictures, codes 000001..00011x */
58 static VLCtab PMBtab1[8] = {
59 {ERROR,0},
60 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,6},
61 {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,5}, {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,5},
62 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,5}, {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,5},
63 {MACROBLOCK_INTRA,5}, {MACROBLOCK_INTRA,5}
64 };
65
66 /* Table B-4, macroblock_type in B-pictures, codes 0010..11xx */
67 static VLCtab BMBtab0[16] = {
68 {ERROR,0},
69 {ERROR,0},
70 {MACROBLOCK_MOTION_FORWARD,4},
71 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,4},
72 {MACROBLOCK_MOTION_BACKWARD,3},
73 {MACROBLOCK_MOTION_BACKWARD,3},
74 {MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,3},
75 {MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,3},
76 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
77 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
78 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
79 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
80 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
81 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
82 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
83 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2}
84 };
85
86 /* Table B-4, macroblock_type in B-pictures, codes 000001..00011x */
87 static VLCtab BMBtab1[8] = {
88 {ERROR,0},
89 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,6},
90 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,6},
91 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,6},
92 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,5},
93 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,5},
94 {MACROBLOCK_INTRA,5},
95 {MACROBLOCK_INTRA,5}
96 };
97
98 /* Table B-5, macroblock_type in spat. scal. I-pictures, codes 0001..1xxx */
99 static VLCtab spIMBtab[16] = {
100 {ERROR,0},
101 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS,4},
102 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,4},
103 {MACROBLOCK_INTRA,4},
104 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2},
105 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2},
106 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1},
107 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1},
108 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1},
109 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1}, {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,1}
110 };
111
112 /* Table B-6, macroblock_type in spat. scal. P-pictures, codes 0010..11xx */
113 static VLCtab spPMBtab0[16] =
114 {
115 {ERROR,0},
116 {ERROR,0},
117 {MACROBLOCK_MOTION_FORWARD,4},
118 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD,4},
119 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,3}, {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,3},
120 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,3}, {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,3},
121 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
122 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
123 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
124 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
125 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
126 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
127 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2},
128 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,2}
129 };
130
131 /* Table B-6, macroblock_type in spat. scal. P-pictures, codes 0000010..000111x */
132 static VLCtab spPMBtab1[16] = {
133 {ERROR,0},
134 {ERROR,0},
135 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,7},
136 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS,7},
137 {MACROBLOCK_PATTERN,7},
138 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,7},
139 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,7},
140 {MACROBLOCK_INTRA,7},
141 {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,6},
142 {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,6},
143 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,6},
144 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,6},
145 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG,6},
146 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG,6},
147 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_PATTERN,6},
148 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_PATTERN,6}
149 };
150
151 /* Table B-7, macroblock_type in spat. scal. B-pictures, codes 0010..11xx */
152 static VLCtab spBMBtab0[14] = {
153 {MACROBLOCK_MOTION_FORWARD,4},
154 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,4},
155 {MACROBLOCK_MOTION_BACKWARD,3},
156 {MACROBLOCK_MOTION_BACKWARD,3},
157 {MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,3},
158 {MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,3},
159 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
160 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
161 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
162 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD,2},
163 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
164 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
165 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2},
166 {MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,2}
167 };
168
169 /* Table B-7, macroblock_type in spat. scal. B-pictures, codes 0000100..000111x */
170 static VLCtab spBMBtab1[12] = {
171 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,7},
172 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,7},
173 {MACROBLOCK_INTRA,7},
174 {MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,7},
175 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD,6},
176 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD,6},
177 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,6},
178 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,6},
179 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_BACKWARD,6},
180 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_BACKWARD,6},
181 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,6},
182 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,6}
183 };
184
185 /* Table B-7, macroblock_type in spat. scal. B-pictures, codes 00000100x..000001111 */
186 static VLCtab spBMBtab2[8] = {
187 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,8},
188 {MACROBLOCK_QUANT|MACROBLOCK_INTRA,8},
189 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,8},
190 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_FORWARD|MACROBLOCK_PATTERN,8},
191 {SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG|MACROBLOCK_QUANT|MACROBLOCK_MOTION_BACKWARD|MACROBLOCK_PATTERN,9},
192 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_QUANT|MACROBLOCK_PATTERN,9},
193 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS,9},
194 {PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS|MACROBLOCK_PATTERN,9}
195 };
196
197 /* Table B-8, macroblock_type in spat. scal. B-pictures, codes 001..1xx */
198 static VLCtab SNRMBtab[8] = {
199 {ERROR,0},
200 {0,3},
201 {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2},
202 {MACROBLOCK_QUANT|MACROBLOCK_PATTERN,2},
203 {MACROBLOCK_PATTERN,1},
204 {MACROBLOCK_PATTERN,1},
205 {MACROBLOCK_PATTERN,1},
206 {MACROBLOCK_PATTERN,1}
207 };
208
209 /* Table B-10, motion_code, codes 0001 ... 01xx */
210 static VLCtab MVtab0[8] =
211 { {ERROR,0}, {3,3}, {2,2}, {2,2}, {1,1}, {1,1}, {1,1}, {1,1}
212 };
213
214 /* Table B-10, motion_code, codes 0000011 ... 000011x */
215 static VLCtab MVtab1[8] =
216 { {ERROR,0}, {ERROR,0}, {ERROR,0}, {7,6}, {6,6}, {5,6}, {4,5}, {4,5}
217 };
218
219 /* Table B-10, motion_code, codes 0000001100 ... 000001011x */
220 static VLCtab MVtab2[12] =
221 { {16,9}, {15,9}, {14,9}, {13,9},
222 {12,9}, {11,9}, {10,8}, {10,8},
223 {9,8}, {9,8}, {8,8}, {8,8}
224 };
225
226 /* Table B-9, coded_block_pattern, codes 01000 ... 111xx */
227 static VLCtab CBPtab0[32] =
228 { {ERROR,0}, {ERROR,0}, {ERROR,0}, {ERROR,0},
229 {ERROR,0}, {ERROR,0}, {ERROR,0}, {ERROR,0},
230 {62,5}, {2,5}, {61,5}, {1,5}, {56,5}, {52,5}, {44,5}, {28,5},
231 {40,5}, {20,5}, {48,5}, {12,5}, {32,4}, {32,4}, {16,4}, {16,4},
232 {8,4}, {8,4}, {4,4}, {4,4}, {60,3}, {60,3}, {60,3}, {60,3}
233 };
234
235 /* Table B-9, coded_block_pattern, codes 00000100 ... 001111xx */
236 static VLCtab CBPtab1[64] =
237 { {ERROR,0}, {ERROR,0}, {ERROR,0}, {ERROR,0},
238 {58,8}, {54,8}, {46,8}, {30,8},
239 {57,8}, {53,8}, {45,8}, {29,8}, {38,8}, {26,8}, {37,8}, {25,8},
240 {43,8}, {23,8}, {51,8}, {15,8}, {42,8}, {22,8}, {50,8}, {14,8},
241 {41,8}, {21,8}, {49,8}, {13,8}, {35,8}, {19,8}, {11,8}, {7,8},
242 {34,7}, {34,7}, {18,7}, {18,7}, {10,7}, {10,7}, {6,7}, {6,7},
243 {33,7}, {33,7}, {17,7}, {17,7}, {9,7}, {9,7}, {5,7}, {5,7},
244 {63,6}, {63,6}, {63,6}, {63,6}, {3,6}, {3,6}, {3,6}, {3,6},
245 {36,6}, {36,6}, {36,6}, {36,6}, {24,6}, {24,6}, {24,6}, {24,6}
246 };
247
248 /* Table B-9, coded_block_pattern, codes 000000001 ... 000000111 */
249 static VLCtab CBPtab2[8] =
250 { {ERROR,0}, {0,9}, {39,9}, {27,9}, {59,9}, {55,9}, {47,9}, {31,9}
251 };
252
253 /* Table B-1, macroblock_address_increment, codes 00010 ... 011xx */
254 static VLCtab MBAtab1[16] =
255 { {ERROR,0}, {ERROR,0}, {7,5}, {6,5}, {5,4}, {5,4}, {4,4}, {4,4},
256 {3,3}, {3,3}, {3,3}, {3,3}, {2,3}, {2,3}, {2,3}, {2,3}
257 };
258
259 /* Table B-1, macroblock_address_increment, codes 00000011000 ... 0000111xxxx */
260 static VLCtab MBAtab2[104] =
261 {
262 {33,11}, {32,11}, {31,11}, {30,11}, {29,11}, {28,11}, {27,11}, {26,11},
263 {25,11}, {24,11}, {23,11}, {22,11}, {21,10}, {21,10}, {20,10}, {20,10},
264 {19,10}, {19,10}, {18,10}, {18,10}, {17,10}, {17,10}, {16,10}, {16,10},
265 {15,8}, {15,8}, {15,8}, {15,8}, {15,8}, {15,8}, {15,8}, {15,8},
266 {14,8}, {14,8}, {14,8}, {14,8}, {14,8}, {14,8}, {14,8}, {14,8},
267 {13,8}, {13,8}, {13,8}, {13,8}, {13,8}, {13,8}, {13,8}, {13,8},
268 {12,8}, {12,8}, {12,8}, {12,8}, {12,8}, {12,8}, {12,8}, {12,8},
269 {11,8}, {11,8}, {11,8}, {11,8}, {11,8}, {11,8}, {11,8}, {11,8},
270 {10,8}, {10,8}, {10,8}, {10,8}, {10,8}, {10,8}, {10,8}, {10,8},
271 {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7},
272 {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7}, {9,7},
273 {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7},
274 {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7}, {8,7}
275 };
276
277 /* Table B-12, dct_dc_size_luminance, codes 00xxx ... 11110 */
278 static VLCtab DClumtab0[32] =
279 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
280 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
281 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
282 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {ERROR, 0}
283 };
284
285 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
286 static VLCtab DClumtab1[16] =
287 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
288 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9}
289 };
290
291 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
292 static VLCtab DCchromtab0[32] =
293 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
294 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
295 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
296 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {ERROR, 0}
297 };
298
299 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
300 static VLCtab DCchromtab1[32] =
301 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
302 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
303 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
304 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
305 };
306
307 /* Table B-14, DCT coefficients table zero,
308 * codes 0100 ... 1xxx (used for first (DC) coefficient)
309 */
310 DCTtab DCTtabfirst[12] =
311 {
312 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
313 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
314 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
315 };
316
317 /* Table B-14, DCT coefficients table zero,
318 * codes 0100 ... 1xxx (used for all other coefficients)
319 */
320 DCTtab DCTtabnext[12] =
321 {
322 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
323 {64,0,2}, {64,0,2}, {64,0,2}, {64,0,2}, /* EOB */
324 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
325 };
326
327 /* Table B-14, DCT coefficients table zero,
328 * codes 000001xx ... 00111xxx
329 */
330 DCTtab DCTtab0[60] =
331 {
332 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
333 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
334 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
335 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
336 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
337 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
338 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
339 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
340 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
341 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
342 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
343 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
344 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
345 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
346 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
347 };
348
349 /* Table B-15, DCT coefficients table one,
350 * codes 000001xx ... 11111111
351 */
352 DCTtab DCTtab0a[252] =
353 {
354 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
355 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
356 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
357 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
358 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
359 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
360 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
361 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
362 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
363 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
364 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
365 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
366 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
367 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
368 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
369 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
370 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
371 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
372 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
373 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
374 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
375 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
376 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
377 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
378 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
379 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
380 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
381 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
382 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
383 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
384 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
385 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
386 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
387 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
388 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
389 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
390 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
391 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
392 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
393 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
394 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
395 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
396 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
397 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
398 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
399 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
400 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
401 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
402 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
403 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
404 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
405 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
406 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
407 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
408 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
409 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
410 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
411 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
412 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
413 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
414 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
415 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
416 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
417 };
418
419 /* Table B-14, DCT coefficients table zero,
420 * codes 0000001000 ... 0000001111
421 */
422 DCTtab DCTtab1[8] =
423 {
424 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
425 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
426 };
427
428 /* Table B-15, DCT coefficients table one,
429 * codes 000000100x ... 000000111x
430 */
431 DCTtab DCTtab1a[8] =
432 {
433 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
434 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
435 };
436
437 /* Table B-14/15, DCT coefficients table zero / one,
438 * codes 000000010000 ... 000000011111
439 */
440 DCTtab DCTtab2[16] =
441 {
442 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
443 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
444 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
445 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
446 };
447
448 /* Table B-14/15, DCT coefficients table zero / one,
449 * codes 0000000010000 ... 0000000011111
450 */
451 DCTtab DCTtab3[16] =
452 {
453 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
454 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
455 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
456 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
457 };
458
459 /* Table B-14/15, DCT coefficients table zero / one,
460 * codes 00000000010000 ... 00000000011111
461 */
462 DCTtab DCTtab4[16] =
463 {
464 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
465 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
466 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
467 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
468 };
469
470 /* Table B-14/15, DCT coefficients table zero / one,
471 * codes 000000000010000 ... 000000000011111
472 */
473 DCTtab DCTtab5[16] =
474 {
475 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
476 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
477 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
478 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
479 };
480
481 /* Table B-14/15, DCT coefficients table zero / one,
482 * codes 0000000000010000 ... 0000000000011111
483 */
484 DCTtab DCTtab6[16] =
485 {
486 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
487 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
488 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
489 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
490 };
491
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